[Solution] 2018 Cadillac ATS 20L Turbo transponder chip missing - can I still start it?

2644 views - Last reply: February 08, 2025
This topic is closed for new replies.
Silversurf
Member since July 2023 • 124 posts

Trying to program a spare key - where's the key code on my 2018 Cadillac ATS 20L Turbo?

Posted on February 08, 2025
Adminbot
Staff Member • 1001 posts

Hello! We've developed a VIN-based tool to help you get your key code for the 2018 Cadillac ATS 20L Turbo. Check it out here: VIN Key Code Generator.

Posted on February 09, 2025

Replies (6)

Digitalx
Member • 42 posts

Has anyone gotten this method to work on a 2018 Cadillac ATS 20L Turbo before?

February 09, 2025 Reply
Ironwill
Member • 34 posts

Just tried this on my 2018 Cadillac ATS 20L Turbo—anyone else have success?

February 10, 2025 Reply
Xenogamer
Member • 64 posts

My 2018 Cadillac ATS 20L Turbo is just sitting there waiting for a miracle like this.

February 11, 2025 Reply
Ultraman
Member • 104 posts

Waiting to see if this will work on my 2018 Cadillac ATS 20L Turbo as well.

February 12, 2025 Reply
Captainkirk
Member • 126 posts

This might finally help me unlock my 2018 Cadillac ATS 20L Turbo's key code.

February 13, 2025 Reply
Aceventura
Member • 78 posts

Following along—same issue with my 2018 Cadillac ATS 20L Turbo.

February 14, 2025 Reply

Check the news !

Classic & Vintage Car Rally
🚗 Local Meetup: Classic & Vintage Car Rally
The best local cars all in one place

📍 Where: Community College Campus
📅 When: May 23 @ 10AM-8PM

Event features:
Kids Activities | Charity Fundraiser

🔧 Forum Members: Don't forget to tag your photos #OurForumName 👋

🔧 Classic Car Restoration Workshop

👨‍🔧 Instructors:
• Electronics Expert Priya Patel
• Race Engineer Emily Torres

🛠️ Hands-On Activities:
• Interior restoration techniques
• 4-hour intensive training
• Personal coaching

📝 Skills Covered:
Metal finishing | Bondo application | Rust treatment

🚗 May 15, 2026 at 1:00 PM (4-hour)

🔥 Certificate of completion provided!

Workshop: Classic Car Restoration Workshop
Dyno Tuning Intensive Course

🔋 Dyno Tuning Intensive Course

🧰 Instructor: Turbocharging Specialist Marco Rodriguez

📱 Workshop Includes:
• Track vs street setup comparisons
• 4-hour intensive hands-on training
• Cooling system optimization | Heat management

📉 Bonus: Exclusive tuner network discounts

🔌 Next Session: May 12, 2026 at 1:00 PM

Customize Your Tuning Focus:

🚀 Performance Mod Cost Estimator

Pro Tip: Supporting mods (fuel system, cooling) are often needed for big power gains

Vehicle Information

Modification Information

Additional Options

🔑 Car Key & Fob FAQ

Common questions about key programming, fob issues, and replacement options

Key Fob Issues
Many cars have a resync procedure: 1) Press lock/unlock buttons while near the car 2) Insert key and turn ignition on/off in a specific pattern 3) Use a sequence of button presses. Check your manual for exact steps - procedures vary widely by manufacturer.
Key Tip: Always have at least two working keys to avoid expensive replacements
Lost Keys
Locksmiths or dealers can: 1) Decode your door or ignition lock to determine key cuts 2) Access your car's key code through manufacturer databases (with proof of ownership) 3) Program new transponder keys using diagnostic equipment.
Key Tip: Some locksmiths offer mobile key programming services
Key Programming
Common reasons: wrong key type for your vehicle, anti-theft system needs reset, low car battery voltage during programming, or the key isn't properly synced. Some cars also have programming limits (only 2-4 keys can be registered).
Lost Keys
1) Contact a locksmith who specializes in automotive keys or your dealership 2) Provide proof of ownership (registration, title, ID) 3) They'll either cut new keys by code or reprogram your car's system 4) This is expensive ($200-$800) as the immobilizer may need resetting.
Security Systems
This means your car's immobilizer system can't read the key's transponder. Causes: dead key battery, damaged transponder chip, faulty car antenna ring around ignition, or system needs resetting. Try replacing the battery first.
Key Tip: Replace key fob batteries every 1-2 years as preventative maintenance
Key Fact: Key fob batteries typically last 3-4 years with normal use

🔑 KEY SERVICES CLASSIFIEDS

Mobile Key Programming Service
$75+
Posted: Apr 27, 2026
Professional car key programming for most makes/models. We come to you! Transponder keys, fobs, and smart keys. Same-day service available. All work guaranteed.
Call: 713-865-5834
Key Fob Repair & Battery Replacement
$25+
Posted: Apr 26, 2026
Fob not working? We fix broken buttons, replace batteries, and resync to your vehicle. Most repairs done while you wait. Water damage specialists available.
Call: 722-598-6378
Smart Key Programming Special
$150
Posted: Apr 23, 2026
Push-to-start key replacement for Toyota, Honda, Nissan, Ford. Includes programming and testing. Limited time offer - normally $200+. Call for availability.
Call: 222-585-7837
Key Fob Case Replacement
$35
Posted: Apr 29, 2026
Cracked or damaged fob housing? We transfer your electronics to a new case. Multiple color options available. Most models in stock. 15-minute service.
Call: 425-259-2710
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Seminar
May 8, 2026

Transponder Key Tech Day

by Auto Key Masters
Learn dealer-level programming techniques normally only available at franchise shops
Workshop
May 21, 2026

Anti-Theft System Demonstration

by The Key Lab
Learn dealer-level programming techniques normally only available at franchise shops
Seminar
May 14, 2026

Immobilizer System Seminar

by VIN Decoder Pros
Live demonstration of the latest anti-theft technologies and bypass prevention methods
Workshop
May 14, 2026

Transponder Key Tech Day

by Immobilizer Experts
Step-by-step instruction for repairing common key fob issues including button and circuit problems

Need immediate service? Call our 24/7 hotline: 1-800-KEY-HELP

Want to list your key service? Join our provider network

Last posts on the forum